Merge branch 'develop' of https://github.com/nlohmann/json into bon8

 Conflicts:

	docs/examples/to_bon8.cpp

	docs/examples/to_bon8.output

	docs/mkdocs/docs/api/basic_json/to_bon8.md

	include/nlohmann/detail/input/binary_reader.hpp

	include/nlohmann/detail/input/input_adapters.hpp

	include/nlohmann/detail/output/binary_writer.hpp

	single_include/nlohmann/json.hpp

	test/CMakeLists.txt

	tests/src/unit-binary_formats.cpp

	tests/src/unit-bon8.cpp

docs/examples/to_bon8.cpp

@@ -0,0 +1,21 @@
+#include <iostream>
+#include <iomanip>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create a JSON value
+    json j = R"({"compact": true, "schema": 0})"_json;
+
+    // serialize it to BON8
+    std::vector<uint8_t> v = json::to_bon8(j);
+
+    // print the vector content
+    for (auto& byte : v)
+    {
+        std::cout << "0x" << std::hex << std::setw(2) << std::setfill('0') << (int)byte << " ";
+    }
+    std::cout << std::endl;
+}